I find this a slap in the face to both Dan Henderson and Lyoto Machida.
Although, Ronda Rousey is an attention-getter, she hasnt paid her dues quite yet. She is a great mixed martial artist, but she gained her notoriety via Chael Sonnen style with her mouth. She will take away the media attention that should deservingly go to Dan and Lyoto, who are fighting for #1 contender matchup.
I would be content if this is a co-main event, because I dont want to see the Hendo/Machida regulated to a 3 round co-main event.